JP2000198246A - Print data processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a print without any deterioration of image quality. SOLUTION: When writing of a vector data is carried out sequentially, a bit map data 2 is also developed using a dummy. A vector development data containing transmission attributes and a bit map development data developing only the bit map data 2 sequentially are stored temporarily in memories. While fetching the reserved data immediately before printing, a vector data 1 is synthesized on the bit map data 2 using the transmission attributes to produce an image data 12 through single operation thus producing a print data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a print data processing apparatus and method using multi-gradation vector data and bitmap data as inputs.

[0002]

2. Description of the Related Art In recent years, image data including vector data and bitmap data has been significantly increased in image data amount due to colorization, multi-gradation, and the like. There is a demand for higher speed. Particularly in an output device such as a printer, there are two restrictions that this image data in a limited memory must be stored and printing must be performed at high speed.

Conventionally, an image with a smaller amount of memory has been obtained by storing data in a description language in order to store vector data and bitmap data in a limited memory and drawing the description language data upon output. Image output is performed while performing output processing, expanding all printable data in advance, compressing it in page units, storing it in memory, and then expanding it.

Hereinafter, a conventional print data processing apparatus for storing data in a memory using a description language will be described with reference to FIGS.
This will be described with reference to FIG.

FIG. 21 is a block diagram of a conventional print data processing device 60 for storing data in a memory using a description language. First, the vector data and the bitmap data are input to the description language conversion means 61 and are sent to the print data processing device 60.
Is replaced by the description language of. FIG. 22 is a block diagram of the description language conversion means 61. Description language conversion means 6
In 1, the bitmap data is converted into the bitmap format of the description language by the bitmap section bitmap conversion means 63, and the vector data is converted by the vector conversion means 62 into the vector format of the description language. FIG. 23 is a block diagram of the vector conversion means 62. The vector data input to the vector conversion means 62 is converted by the data analysis means 64 into the print data processing device 6.
The replacement is performed with a combination of the description languages of the vector of 0. The print data processing device 60 has three description language formats: a straight line, a rectangle, and a bitmap.
These are generated by a linear conversion unit 65, a rectangle conversion unit 66, and a vector part bitmap conversion unit 67, respectively.
For example, vector data of a circle is converted into a combination of straight lines by selecting a straight line converting unit 65 by a data analyzing unit 64,
The character vector data is subjected to bitmap conversion by selecting the vector part bitmap conversion means 67 by the data analysis means 64, and the wide straight line is converted into a rectangular vector by selecting the rectangle conversion means 66 by the data analysis means 64 It is output as conversion data 68. The descriptive language conversion data generated in this way is stored in the memory as it is by the descriptive language storage means 69, and when the output of image data becomes necessary, the descriptive language development means 70 analyzes the descriptive language and converts all the descriptive language data into bitmaps. The superimposition is performed based on the superimposition information of the vector data and the bitmap data input attached to the description language, and the image data is output as the bitmap data.

Another conventional technique is shown in FIG. In FIG. 24, description language conversion means 61 and description language development means 70 are the same as those in FIG. 21 shown in the prior art. In FIG. 24, after the decompression operation by the description language decompression means 70 is performed (if necessary), the decompression data compression means 7
1, the decompressed data is compressed, and the compressed data is stored in the decompressed data storage means 72. When printing, the data is taken out from the expanded data storage means 72 and
This is a configuration in which image data is output while the expansion operation is performed by the expansion data expansion unit 73.

[0007]

However, FIG.
In the configuration as shown in FIG. 7, the description language data stored in the memory by the description language storage means 69 increases, and if the number of superpositions increases, it takes time from the start to the end of the output of the image data. In such a device that requires real-time performance, there is a problem that the image data cannot be expanded in time when a high-speed output engine is used. Further, in the configuration as shown in FIG. 24, the compression operation is performed after all the description language inputs are expanded, so that the time until printing is long, or when the bitmap data is very large, the When the rate is almost 1, lossy compression (reducing the resolution or performing irreversible compression) is required to store the data in the memory. In this case, vector data such as characters and graphs are required. There was a problem that the quality of the product deteriorated. The present invention solves the above-mentioned conventional problems, reduces the amount of storage memory without storing in a memory using a description language, and achieves high-speed output without performing a lot of superimposition processing when developing an image. An object of the present invention is to realize a print data processing apparatus that can perform the processing. Also, by separating vector data and bitmap data, if the capacity of bitmap data is large, it is possible to realize a print data processing apparatus that reduces only the quality of bitmap data and does not reduce the quality of vector information. The purpose is.

[0008]

According to the present invention, in order to solve the above-described problems, vector data is drawn by using a palette composed of a combination of primary colors. Bitmap portion data is drawn by using the bitmap palette value as a bitmap palette value using one unique palette value as a bitmap palette value and using the bitmap palette value as the overlay attribute, and drawing only the bitmap data using the overlay attribute. Is created, the vector part data and the bitmap part data are stored in a memory, and the vector part data is superimposed on the bitmap part data at the time of development while checking the pallet value, so that the storage memory capacity is small and 1 It is possible to realize a print data processing device capable of performing high-speed output only for the superposition of the times.

Further, when the vector part data and the bitmap part data are stored in the memory, an encoding means is provided only for the bitmap data, and overflows while detecting whether or not the storage in the memory overflows. In the case where the bitmap image data is likely to overflow), the bitmap image data is encoded with a high compression ratio, thereby realizing a print data processing apparatus in which the input data amount is very large and the quality of the vector data is not deteriorated even in a complicated case. .

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION
Pallet generating means for generating a pallet dictionary composed of pallet values indicating combinations of primary colors from the input vector data, for image data input consisting of vector data and bitmap data having a plurality of superimposition attributes; And a bitmap palette generating means for registering one unique palette value for the bitmap data in the palette dictionary as a bitmap palette value, and using a superposition attribute of the vector data and the bitmap data. When performing the drawn drawing, the vector data is drawn with the pallet value in the pallet dictionary generated by the pallet generating means, and the bitmap data is stored in the pallet dictionary generated by the bitmap pallet generating means. The bitmap palette value Vector part data generating means for performing drawing and generating vector part data in accordance with a superposition attribute of two drawings, the vector part data generated by the vector part data generating means, the palette generating means, and the bitmap palette generation Vector part data storage means for storing the palette dictionary generated by the means, bitmap part data generation means for drawing only the bitmap data input using a superimposition attribute to generate bitmap part data, A bitmap section data storage section for storing the bitmap section data generated by the map section data generation section; and storing the vector section data for the bitmap section data stored in the bitmap section data storage section. Said vector stored in the means When performing data superimposition, if the vector portion data is the bitmap palette value representing a bitmap, the overwriting process is not performed on the bitmap portion data, and the vector portion data represents a bitmap. In the case other than the bitmap palette value, the vector part data superimposing means for performing bitmapping and overwriting the palette value of the vector part data on the bitmap part data using the palette dictionary, and the vector part data A storage unit and a data amount detection unit for detecting an amount of data stored in the bitmap unit data storage unit; and a compression ratio in the bitmap encoding unit when the detected data amount becomes larger than a predetermined value. The storage capacity of the vector part data It is possible to provide a print data processing device which is small and can be output from the storage memory only by one superposition, and does not degrade the quality of vector data.

According to a second aspect of the present invention, for image data input consisting of vector data and bitmap data having a plurality of overlay attributes, the input image data is divided into bands consisting of a plurality of rasters. Band dividing means for allocating to a region, palette generating means for generating a band palette dictionary composed of palette values indicating combinations of primary colors from the input vector data divided by the band dividing means, and the palette generating means, A bitmap palette generating means for registering one unique palette value as a bitmap palette value in the band palette dictionary for the bitmap data divided by the band dividing means; Vector data and the bit map When performing drawing using a data superimposition attribute, the vector data is drawn using the palette values in the band palette dictionary generated by the palette generating means, and the bitmap data is stored in the bitmap palette generating means. The drawing is performed by the vector map data generated by the vector map data generated by the vector map data generated by the vector map data generated by the bitmap palette value in the band palette dictionary generated by the method. Only the vector part data storing means for storing the vector part data and the band palette dictionary generated by the palette generating means and the bitmap palette generating means, and the bitmap data input band-divided by the band dividing means are overlapped. Draw using alignment attribute Bitmap part data generating means for generating bitmap part data, bitmap part data storing means for storing the bitmap part data generated by the bitmap part data generating means, and being divided by the band dividing means. When superimposing the vector part data stored in the vector part data storage part on the bit map part data stored in the bit map part data storage part for each band, the vector part If the data is the bitmap palette value representing the bitmap, the overwriting process is not performed on the bitmap portion data.If the vector portion data is other than the bitmap palette value representing the bitmap, the bit Put the pallet value of the vector part data on the map part data before A vector part data superimposing means for performing bitmapping and overwriting using a band palette dictionary; a data amount detecting means for detecting an amount of data stored in the vector part data storage means and the bitmap part data storage means; By using a configuration having a compression ratio changing unit for changing a compression ratio in the bitmap encoding unit when the detected data amount becomes larger than a predetermined value, vector data and bitmap data are processed by performing processing in band units. A buffer memory size for receiving image data can be reduced, a storage memory capacity can be further reduced, high-speed output can be performed only by one superposition, and a print data processing apparatus which ensures the quality of vector data can be realized.

According to a third aspect of the present invention, for image data input consisting of vector data and bitmap data having a plurality of superimposition attributes, the input image data is divided into bands consisting of a plurality of rasters. Band dividing means for allocating to a region, palette generating means for generating a band palette dictionary composed of palette values indicating combinations of primary colors from the input vector data divided by the band dividing means, and the palette generating means, A bitmap palette generating means for registering one unique palette value as a bitmap palette value in the band palette dictionary for the bitmap data divided by the band dividing means; Vector data and the bit map When performing drawing using a data superimposition attribute, the vector data is drawn using the palette values in the band palette dictionary generated by the palette generating means, and the bitmap data is stored in the bitmap palette generating means. The drawing is performed by the vector map data generated by the vector map data generated by the vector map data generated by the vector map data generated by the bitmap palette value in the band palette dictionary generated by the method. Only the vector part data storing means for storing the vector part data and the band palette dictionary generated by the palette generating means and the bitmap palette generating means, and the bitmap data input band-divided by the band dividing means are overlapped. Draw using alignment attribute Bitmap part data generating means for generating bitmap part data, bitmap part data storing means for storing the bitmap part data generated by the bitmap part data generating means, and being divided by the band dividing means. When superimposing the vector part data stored in the vector part data storage part on the bit map part data stored in the bit map part data storage part for each band, the vector part If the data is the bitmap palette value representing the bitmap, the overwriting process is not performed on the bitmap portion data.If the vector portion data is other than the bitmap palette value representing the bitmap, the bit Put the pallet value of the vector part data on the map part data before A vector part data superimposing means for performing bitmapping and overwriting using a band palette dictionary; a data amount detecting means for detecting an amount of data stored in the vector part data storage means and the bitmap part data storage means; A compression ratio changing unit that changes a compression ratio in the bitmap encoding unit when the detected data amount becomes larger than a predetermined value; and the bitmap unit encoding unit changed by the compression ratio changing unit. With the configuration having the band-by-band coding management means for managing the compression ratio of
By performing processing in band units, the buffer memory size when receiving vector data or bitmap image data can be reduced, the storage memory capacity is further reduced, and high-speed output can be performed by only one superimposition. It is possible to realize a print data processing apparatus in which the quality can be ensured and the image quality degradation of the band joint part due to the difference in the compression ratio for each band when the compression ratio for the bitmap image data is increased is not noticeable.

According to a fourth aspect of the present invention, for image data input consisting of vector data and bitmap data having a plurality of overlay attributes, the input image data is divided into bands consisting of a plurality of rasters. Band dividing means for allocating to a region, palette generating means for generating a band palette dictionary composed of palette values indicating combinations of primary colors from the input vector data divided by the band dividing means, and the palette generating means, A bitmap palette generating means for registering one unique palette value as a bitmap palette value in the band palette dictionary for the bitmap data divided by the band dividing means; Vector data and the bit map When performing drawing using a data superimposition attribute, the vector data is drawn using the palette values in the band palette dictionary generated by the palette generating means, and the bitmap data is stored in the bitmap palette generating means. The drawing is performed by the vector map data generated by the vector map data generated by the vector map data generated by the vector map data generated by the bitmap palette value in the band palette dictionary generated by the method. Only the vector part data storing means for storing the vector part data and the band palette dictionary generated by the palette generating means and the bitmap palette generating means, and the bitmap data input band-divided by the band dividing means are overlapped. Draw using alignment attribute Bitmap part data generating means for generating bitmap part data, bitmap part data storing means for storing the bitmap part data generated by the bitmap part data generating means, and being divided by the band dividing means. When superimposing the vector part data stored in the vector part data storage part on the bit map part data stored in the bit map part data storage part for each band, the vector part If the data is the bitmap palette value representing the bitmap, the overwriting process is not performed on the bitmap portion data.If the vector portion data is other than the bitmap palette value representing the bitmap, the bit Put the pallet value of the vector part data on the map part data before A vector part data superimposing means for performing bitmapping and overwriting using a band palette dictionary; a data amount detecting means for detecting an amount of data stored in the vector part data storage means and the bitmap part data storage means; A compression ratio changing unit that changes a compression ratio in the bitmap encoding unit when the detected data amount becomes larger than a predetermined value; a toner save control unit; and the toner save control unit performs toner save control. When the compression ratio of the bitmap encoding unit is changed by the compression ratio changing unit, the buffer memory size when receiving vector data or bitmap image data can be reduced by performing processing in band units. In addition, the storage memory capacity is small and high-speed output can be performed only by one superposition. In addition to ensuring the quality of vector data, when the toner save mode is active, the compression ratio for bitmap image data can be increased from the beginning, thus avoiding recompression operations when data does not fit in memory. It is possible to realize a print data processing apparatus that can perform the printing.

According to a fifth aspect of the present invention, for image data input consisting of vector data and bitmap data having a plurality of superimposition attributes, the input image data is divided into bands consisting of a plurality of rasters. Band dividing means for allocating to a region, palette generating means for generating a band palette dictionary composed of palette values indicating combinations of primary colors from the input vector data band-divided by the band dividing means, and the palette generating means, A bitmap palette generating unit for registering one unique palette value as a bitmap palette value in the band palette dictionary with respect to the bitmap data divided by the band dividing unit; Vector data and the bit map When performing drawing using a data superimposition attribute, the vector data is drawn using the palette values in the band palette dictionary generated by the palette generating means, and the bitmap data is stored in the bitmap palette generating means. The drawing is performed by the vector map data generated by the vector map data generated by the vector map data generated by the vector map data generated by the bitmap palette value in the band palette dictionary generated by the method. Only the vector part data storing means for storing the vector part data and the band palette dictionary generated by the palette generating means and the bitmap palette generating means, and the bitmap data input band-divided by the band dividing means are overlapped. Draw using alignment attribute Bitmap part data generating means for generating bitmap part data, bitmap part data storing means for storing the bitmap part data generated by the bitmap part data generating means, and being divided by the band dividing means. When superimposing the vector part data stored in the vector part data storage part on the bit map part data stored in the bit map part data storage part for each band, the vector part If the data is the bitmap palette value representing the bitmap, the overwriting process is not performed on the bitmap portion data.If the vector portion data is other than the bitmap palette value representing the bitmap, the bit Put the pallet value of the vector part data on the map part data before A vector part data superimposing means for performing bitmapping and overwriting using a band palette dictionary; a data amount detecting means for detecting an amount of data stored in the vector part data storage means and the bitmap part data storage means; The bitmap encoding unit comprising: a compression ratio changing unit that changes a compression ratio in the bitmap encoding unit when the detected data amount becomes larger than a predetermined value; and a toner save control unit. Is composed of a bitmap section gradation-oriented encoding means that places importance on gradation information, a bitmap section contour-oriented encoding means that places importance on contour information, and an encoding selection section that selects the two. When the means performs the toner save control, the encoding selecting means selects the bitmap portion contour-oriented encoding means. By performing processing in band units, the buffer memory size when receiving vector data and bitmap image data can be reduced, and the storage memory capacity is small and high-speed output can be performed only by one superimposition. In addition to ensuring the quality of vector data, when the toner save mode is activated, when highlighting an image by toner save by adding contour information instead of reducing gradation information for the same compression ratio By not highlighting only the outline information, it is possible to realize a print data processing apparatus capable of ensuring clear image quality of an object even when toner is saved.

According to a sixth aspect of the present invention, for image data input consisting of vector data and bitmap data having a plurality of overlay attributes, the input image data is divided into bands consisting of a plurality of rasters. Band dividing means for allocating to a region, palette generating means for generating a band palette dictionary composed of palette values indicating combinations of primary colors from the input vector data divided by the band dividing means, and the palette generating means, A bitmap palette generating means for registering one unique palette value as a bitmap palette value in the band palette dictionary for the bitmap data divided by the band dividing means; Vector data and the bit map When performing drawing using a data superimposition attribute, the vector data is drawn using the palette values in the band palette dictionary generated by the palette generating means, and the bitmap data is stored in the bitmap palette generating means. The drawing is performed by the vector map data generated by the vector map data generated by the vector map data generated by the vector map data generated by the bitmap palette value in the band palette dictionary generated by the method. Only the vector part data storing means for storing the vector part data and the band palette dictionary generated by the palette generating means and the bitmap palette generating means, and the bitmap data input band-divided by the band dividing means are overlapped. Draw using alignment attribute Bitmap part data generating means for generating bitmap part data, bitmap part data storing means for storing the bitmap part data generated by the bitmap part data generating means, and being divided by the band dividing means. When superimposing the vector part data stored in the vector part data storage part on the bit map part data stored in the bit map part data storage part for each band, the vector part If the data is the bitmap palette value representing the bitmap, the overwriting process is not performed on the bitmap portion data.If the vector portion data is other than the bitmap palette value representing the bitmap, the bit Put the pallet value of the vector part data on the map part data before A vector part data superimposing means for performing bitmapping and overwriting using a band palette dictionary; a data amount detecting means for detecting an amount of data stored in the vector part data storage means and the bitmap part data storage means; A compression ratio changing unit that changes a compression ratio in the bitmap encoding unit when the detected data amount becomes larger than a predetermined value, further comprising a bitmap unit at a stage preceding the bitmap unit encoding unit. There is a color conversion means, and even if the color space is luminance data such as RGB or YUV,
Even if density data such as MYK is converted to the YUV color space, the buffer memory size when receiving vector data or bitmap image data can be reduced by performing processing in band units, and furthermore, storage memory It has a small capacity and can perform high-speed output of only one superimposition, can ensure the quality of vector data, and can convert an input bitmap image into one color space, thereby eliminating the need for a plurality of compression circuits and providing a color space. It is possible to realize a print data processing apparatus capable of further reducing the data storage memory capacity due to the method having a high compression rate.

According to a seventh aspect of the present invention, for image data input consisting of vector data and bitmap data having a plurality of superimposition attributes, the input image data is divided into bands consisting of a plurality of rasters. Band dividing means for allocating to a region, palette generating means for generating a band palette dictionary composed of palette values indicating combinations of primary colors from the input vector data band-divided by the band dividing means, and the palette generating means, A bitmap palette generating unit for registering one unique palette value as a bitmap palette value in the band palette dictionary with respect to the bitmap data divided by the band dividing unit; Vector data and the bit map When performing drawing using a data superimposition attribute, the vector data is drawn using the palette values in the band palette dictionary generated by the palette generating means, and the bitmap data is stored in the bitmap palette generating means. The drawing is performed by the vector map data generated by the vector map data generated by the vector map data generated by the vector map data generated by the bitmap palette value in the band palette dictionary generated by the method. Only the vector part data storing means for storing the vector part data and the band palette dictionary generated by the palette generating means and the bitmap palette generating means, and the bitmap data input band-divided by the band dividing means are overlapped. Draw using alignment attribute Bitmap part data generating means for generating bitmap part data, bitmap part data storing means for storing the bitmap part data generated by the bitmap part data generating means, and being divided by the band dividing means. When superimposing the vector part data stored in the vector part data storage part on the bit map part data stored in the bit map part data storage part for each band, the vector part If the data is the bitmap palette value representing the bitmap, the overwriting process is not performed on the bitmap portion data.If the vector portion data is other than the bitmap palette value representing the bitmap, the bit Put the pallet value of the vector part data on the map part data before A vector part data superimposing means for performing bitmapping and overwriting using a band palette dictionary; a data amount detecting means for detecting an amount of data stored in the vector part data storage means and the bitmap part data storage means; And a compression rate changing means for changing a compression rate in the bitmap encoding means when the detected data amount becomes larger than a predetermined value. There is a bitmap part color conversion means having a table interpolation means and a table data storage memory for storing table data of the first table interpolation means, and a color space corresponding to the bitmap data input has a luminance such as RGB or YUV. Bit data after conversion to YUV color space, regardless of whether it is system data or density system data such as CMYK. After the encoded data is encoded by the map encoding means, and the encoded data is again decoded into the YUV color space by the bitmap section decompression means, when the data is converted into CMYK density data by the CMYK conversion means having the second table interpolation means, When the bitmap data input is luminance, table data for converting luminance to CMYK density is given to the second table interpolation means from the table data storage memory. When the bitmap data input is density, the first table interpolation means is used. The table interpolating means and the second table interpolating means are provided with the table data from the table data storage memory so as to have the inverse conversion relationship. Buffer memory size for receiving data can be reduced Furthermore, the storage memory capacity is small, high-speed output can be performed only by one superposition, the quality of vector data can be secured, and a plurality of compression circuits are required by converting the input bitmap image into one color space. In addition, the data storage memory capacity can be further reduced due to the method having a high compression ratio in the color space, and the third color conversion means can simply change the interpolation parameters according to the color space of the input bitmap image. Can be converted to CMYK colors, and a print data processing apparatus with a simple circuit configuration can be realized.

According to an eighth aspect of the present invention, for image data input consisting of vector data and bitmap data having a plurality of overlay attributes, the input image data is divided into a plurality of raster bands. Band dividing means for allocating to a region, palette generating means for generating a band palette dictionary composed of palette values indicating combinations of primary colors from the input vector data divided by the band dividing means, and the palette generating means, A bitmap palette generating means for registering one unique palette value as a bitmap palette value in the band palette dictionary for the bitmap data divided by the band dividing means; Vector data and the bit map When performing drawing using a data superimposition attribute, the vector data is drawn using the palette values in the band palette dictionary generated by the palette generating means, and the bitmap data is stored in the bitmap palette generating means. The drawing is performed by the vector map data generated by the vector map data generated by the vector map data generated by the vector map data generated by the bitmap palette value in the band palette dictionary generated by the method. Only the vector part data storing means for storing the vector part data and the band palette dictionary generated by the palette generating means and the bitmap palette generating means, and the bitmap data input band-divided by the band dividing means are overlapped. Draw using alignment attribute Bitmap part data generating means for generating bitmap part data, bitmap part data storing means for storing the bitmap part data generated by the bitmap part data generating means, and being divided by the band dividing means. When superimposing the vector part data stored in the vector part data storage part on the bit map part data stored in the bit map part data storage part for each band, the vector part If the data is the bitmap palette value representing the bitmap, the overwriting process is not performed on the bitmap portion data.If the vector portion data is other than the bitmap palette value representing the bitmap, the bit Put the pallet value of the vector part data on the map part data before A vector part data superimposing means for performing bitmapping and overwriting using a band palette dictionary; a data amount detecting means for detecting an amount of data stored in the vector part data storage means and the bitmap part data storage means; And a compression rate changing means for changing a compression rate in the bitmap encoding means when the detected data amount becomes larger than a predetermined value. There is a bitmap part color conversion means having a table interpolation means and a table data storage memory for storing table data of the first table interpolation means, and a color space corresponding to the bitmap data input has a luminance such as RGB or YUV. Bit data after conversion to YUV color space, regardless of whether it is system data or density system data such as CMYK. After the encoded data is encoded by the map encoding means and the encoded data is again decoded into the YUV color space by the bitmap section decompression means, when the data is converted into CMYK density data by the CMYK conversion means having the second table interpolation means, When the bitmap data input is luminance, table data for converting luminance to CMYK density is given to the second table interpolation means from the table data storage memory. When the bitmap data input is density, the first table interpolation means is used. Table data such that the table interpolating means and the second table interpolating means have an inverse conversion relationship is given from the table data storage memory, and the first table interpolating means and the second table interpolating means With the same hardware configuration, vector data can be And the size of the buffer memory when receiving bitmap image data can be reduced, the storage memory capacity is small, high-speed output can be performed by only one superimposition, the quality of vector data can be ensured, and the input bitmap By converting the image into one color space, a plurality of compression circuits are not required, and the data storage memory capacity can be further reduced due to the method of high compression ratio in the color space. By simply changing the interpolation parameters according to the color space of the map image, it is possible to convert to CMYK colors depending on the color printer, and to perform color conversion processing before the bitmap section encoding means and color conversion after the bitmap section expansion means. Since a common circuit can be used for processing, a print data processing apparatus having a simple circuit configuration can be realized. .

(Embodiment 1) Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS.

FIG. 1 is a schematic configuration diagram of a print data processing apparatus according to the first embodiment of the present invention. In FIG. 1, reference numeral 60 denotes the entire print data processing apparatus of the present invention. The print data processing device 60 receives, for example, vector data 1 and bitmap data 2 in the CMYK color space as inputs and generates image data 12. As shown in FIG. 5, the vector data has color data of a display color and a background color, a shape, a fill pattern, and an overlay attribute as vector contents, and the bitmap data has an origin, a width (W), a height (H), W × H having a superimposition attribute, a fill pattern, and four values of C, M, Y, and K as pixel values
Has the pixel data of the pixel as the content. As for the vector data, all the data are first sent to the pallet generating means 3 once. As shown in FIG. 2, the pallet generating means 3 has as inputs a vector data input, a bitmap pallet value generated by the bitmap pallet generating means 4 of FIG. 1, and a vector data start / end signal present in the vector data input. The palette dictionary 50 has the structure shown in FIG. The number of pallets that can be registered is 0x0000 to 0xF
The contents of the dictionary are C / M / Y /
K is an 8-bit 32-bit data, and the address value of the dictionary is a pallet value. The dictionary comparing means 51 shown in FIG. 2 comprises a vector read address register, a final palette address register and a dictionary comparator as shown in FIG. Have input as input color data and vector start / end signals, and have as output a palette dictionary address, a final palette value, and a palette value obtained from the color data input. The dictionary comparator first performs initialization upon receiving a vector data start signal. In the initialization, the value of the last palette address register and the value of the palette dictionary read address register are set to 0. Next, upon receiving the vector data input, the value of the palette dictionary read address register is set to 0 by using the color data input to determine whether or not it exists in the palette dictionary 50. / M / Y / K value and C / of palette dictionary data
The M / Y / K values are compared. If the same color data exists in the palette dictionary, the address of the palette dictionary is output as a palette value, the dictionary comparison ends, and the next color data input is awaited. If the same color data does not exist in the palette dictionary, the color data is written in the palette dictionary using the final palette value as the address of the palette dictionary, and the value of the final palette address register is incremented by one. The color data for which the processing of the dictionary comparison means 51 has been completed for the display color and the background color is converted by the vector data conversion means 52 of FIG. The data is replaced and written back to the vector data input / output as the palette converted vector data. Upon receiving the vector data end signal, the pallet generating means writes the bitmap pallet value generated by the bitmap pallet generating means into the bullet dictionary at the address indicated by the final pallet value, the final pallet value representing the dictionary size and the pallet dictionary. From the address 0 to the address indicated by the final pallet value in the vector part data storage means in FIG. 1, and the pallet generation ends. Bitmap palette generating means 4 of FIG.
Generates a value obtained by increasing the final pallet value output from the pallet generating means 3 by 1 as a bitmap pallet value to be input to the pallet generating means 3.

Next, when the generation of the pallet dictionary is completed, the vector part data generating means 5 of FIG. 1 receives the pallet converted vector data and the bitmap data input written back by the pallet generating means, and generates the vector part data by the pallet value. Do. The pallet-converted vector data received from the vector data input / output has the display color pallet, the background color pallet color data, the shape, the fill pattern, and the overlay attribute shown in FIG. The bitmap pallet value obtained by the bitmap pallet generation means 3 is used instead of the origin, width, height, superposition attribute and pixel data of the bitmap data input of FIG. Is used to generate vector part data. The vector part data generating means 4 has pallet-converted vector data, bitmap data, and bitmap pallet values as inputs, and the pallet-converted vector data and bitmap data are processed in the input order. When the pallet-converted vector data is input, the vector part data storage means of FIG. 1 of the pixel position value (S), the display color pallet (F), and the background color pallet (B) where the shape is binary-decompressed, and the pixel position 6 is stored in the storage pixel register (V
D), the superimposition processing is performed by using the paint pattern data (P) and the superimposition attribute, and the result is written into the processed register (VW). The value of W is stored in the pixel data position of the vector part data storage means 6. Write. The superposition processing is performed as shown in FIG. 9 according to the value of the superposition attribute. If bitmap data is input, the overlay attribute, fill pattern, bitmap pallet value (BP) generated by the bitmap pallet generating means 4 and pixel position for the pixel in the area consisting of the origin, height and width The data stored in the vector part data storage means 6 of FIG. 1 is read out as a vector part data storage part read value to the storage pixel register (VD), and the fill pattern data (P) and the overlay attribute are used. A superimposition process is performed, the result is written into the processed register (VW), and the value of W is written into the pixel data position of the vector part data storage means 6. The superposition process is performed as shown in FIG. 10 according to the value of the superposition attribute.

The vector part data storage means 6 in FIG. 1 has a memory for storing vector part data, and initializes all memory values to 0 before inputting vector data and bitmap data. Next, in accordance with the processing of the pallet generating means 3, the final pallet value and the contents of the pallet dictionary are written into the memory. Further, in accordance with the processing of the vector part data generating means, the pixel position data is read as the vector part data storage part read value in FIG. 7 and the data is written to the pixel position as the vector part data storage part write value.

The bitmap data generating means 7 shown in FIG. 1 has bitmap data as an input as shown in FIG. 8, and inputs pixel values, fill pattern values, superposition attributes, and bitmap data in the bitmap data. Bitmap section data is generated from the pixel values stored in the storage section. Here, the pixel values in the bitmap data and the pixel values stored in the bitmap data storage have color values of (C, M, Y, K). Bitmap data storage means 9 in FIG. 1 for the pixel values (BI), fill pattern data (P) and pixel positions of the bitmap data for all pixel positions represented by the origin, height and width in the bitmap data. The data stored in the bit map portion is read out from the storage pixel register (BD) as a read value of the data storage portion, a superposition process is performed using the superposition attribute, and the read value is written to the processed register (BW). The value of W is written in the pixel data position of the data storage means 9. The superposition processing is performed according to the superposition attribute value as shown in FIG.

The bitmap section data storage means 9 in FIG. 1 has a memory for storing bitmap section data, and initializes all memory values to 0 before inputting vector data and bitmap data. Next, according to the processing of the bitmap section data generation means, the pixel position data is read as the bitmap section data storage section read value in FIG.
Data writing to the pixel position is performed as a bit map data storage data write value.

As described above, the vector data is once stored in the vector part data storage means 6, and the bitmap data is once stored in the bitmap data storage means 9. When the image output request is received, the vector part data superposition shown in FIG. The data is superimposed by the superimposing means 11 and output as image data.

In the vector part data superimposing means 11, as shown in FIG. 12, the bit map part data (C, M, Y, K) stored in the bit map part data storage means 9 of the pixel position of the image output data, It has the vector part data (palette value) stored in the vector part data storage means 6 of the pixel position and the bitmap pallet value as inputs, and reads the pallet dictionary stored in the vector part data storage means 6 as the pallet dictionary. Is stored. In the bitmap palette determination, it is determined whether the palette value indicated by the vector part data is the same as the bitmap palette value, and the result and the vector part data are output. In the output superposition process, when the bitmap palette determination determines that the palette value of the pixel of the vector portion data is the same as the bitmap palette, the bitmap portion data is output as the pixel value, and the pixel of the vector portion data is output. If it is determined that the pallet value is not the same as the bitmap pallet value, the content read from the pallet dictionary is output using the pallet value as an address as a pixel value.

Here, a data amount detecting means 13 is provided for detecting the total capacity of the vector part data storing means 6 and the bit map part data storing means 9. When the data amount detected by the data amount detection unit 13 exceeds a predetermined amount, the compression ratio changing unit 14
The compression ratio changing means 14 outputs an instruction to change the compression ratio and a compression ratio to be changed to the compression ratio changing means 14. When changing the quantization rate to reduce the code length, and set parameters such as
The bitmap data is transmitted from the bitmap data generation unit 7 again, and the bitmap data is compressed by the bitmap coding unit. However, when the data amounts of the bitmap data and the vector data are known in advance, it goes without saying that the optimum compression ratio can be initially set in the compression ratio changing means 14. The data that has been compressed and stored in the bitmap part data storage means 9 is used when the image data 12 is actually generated. Is expanded by the bitmap section expansion means 10 according to the above, and input to the vector section data superimposing means 11 as described above.

As described above, in the first embodiment, the storage capacity is small by expressing the vector portion data by the pallet value of the vector data and the bitmap pallet value, and the output from the storage memory can be performed only by one superposition. In addition, if the data amount is large and the memory size of the data storage means overflows, the compression ratio of only the bitmap image can be increased, so that it is possible to provide a print data processing apparatus which does not degrade the quality of vector data.

(Embodiment 2) Hereinafter, Embodiment 2 of the present invention will be described with reference to FIG.

FIG. 13 is a schematic configuration diagram of a print data processing apparatus according to the second embodiment of the present invention. In FIG. 13, vector data 1, bitmap data 2, pallet generating means 3, bitmap pallet generating means 4, vector part data generating means 5, vector part data storing means 6, bitmap part data generating means 7, bitmap part The encoding means 8, bitmap part data storage means 9, bitmap part data decompression means 10, bitmap part data superimposing means 11, data amount detecting means 13, and compression ratio changing means 14 are exactly the same as those in the first embodiment. It is.

In the second embodiment, when the vector data 1 and the bitmap data 2 are input, the data of the entire page is not input, but is divided into a predetermined band size. A band dividing means 15 is provided so as to be inputted. This band dividing means 1
5, the input data is input in small pieces. Therefore, as described in the first embodiment, when the data storage means 6, 7 overflows, the compression ratio is changed again to encode the bitmap image data. Since the entire image can be recompressed in the unit of a fragmented band without recompressing the entire image, it is not necessary to load the vector data 1 and the bitmap data 2 for one page into the reception buffer. It should be left.

As described above, in the second embodiment, the vector portion data is represented by the pallet value of the vector data and the bitmap pallet value, so that the storage capacity is small and the output from the storage memory is only one superposition. If the data amount is large and overflows the memory size of the data storage means, the compression ratio of only the bitmap image can be increased, so that the quality of the vector data is not degraded, and the processing of the vector data is performed by further processing in band units. And a print data processing apparatus capable of reducing the buffer memory size when receiving bitmap image data.

(Embodiment 3) Embodiment 3 of the present invention will be described below with reference to FIG.

FIG. 14 is a schematic configuration diagram of a print data processing apparatus according to the third embodiment of the present invention. In FIG. 14, vector data 1, bitmap data 2, palette generating means 3, bitmap palette generating means 4, vector part data generating means 5, vector part data storing means 6, bitmap part data generating means 7, bitmap part The encoding means 8, the bit map part data storage means 9, the bit map part data decompression means 10, the bit map part data superimposing means 11, the data amount detecting means 13, the compression ratio changing means 14, and the band dividing means 15 This is exactly the same as in the second embodiment.

In the third embodiment, a band-by-band coding management means 16 for storing and managing that the compression rate of the bitmap data has been changed by the compression rate changing means 14 is added.

Here, as an example of input data, when bitmap data extends over a plurality of bands, one of the bands contains bitmap data and vector data. If only the bitmap data of a band is changed in compression ratio, an image in which the boundary is conspicuous at the boundary of the band due to a difference in compression ratio between adjacent bands. In order to avoid this inconvenience, the above-described inconvenience can be avoided by managing the same compression ratio for one object by the band-by-band encoding management means 16.

As described above, in the third embodiment, the vector portion data is represented by the pallet value of the vector data and the bitmap pallet value, so that the storage capacity is small, and the output from the storage memory is performed only once. If the data amount is large and overflows the memory size of the data storage means, the compression ratio of only the bitmap image can be increased, so that the quality of the vector data is not degraded and the processing of the vector data is performed by further processing in band units. Buffer memory size when receiving bitmap image data and bitmap image data, and by equalizing the compression ratio within the same object for bitmap data, provides a print data processing device that does not deteriorate in quality even when band processing is performed. it can.

(Embodiment 4) Hereinafter, Embodiment 4 of the present invention will be described with reference to FIG.

FIG. 15 is a schematic configuration diagram of a print data processing apparatus according to the fourth embodiment of the present invention. In FIG. 15, vector data 1, bitmap data 2, pallet generating means 3, bitmap pallet generating means 4, vector part data generating means 5, vector part data storing means 6, bitmap part data generating means 7, bitmap part The encoding means 8, the bit map part data storage means 9, the bit map part data decompression means 10, the bit map part data superimposing means 11, the data amount detecting means 13, the compression ratio changing means 14, and the band dividing means 15 This is exactly the same as in the second embodiment.

In the fourth embodiment, a toner save control means 17 is added, and when the toner save is operated, the compression ratio is set to a high value in advance. When the toner save is activated, the gradation information or the resolution information is naturally lost. Therefore, even if the compression ratio is set to a higher value at the time of encoding with respect to the normal print mode, the quality hardly changes.

As described above, in the fourth embodiment, the vector portion data is represented by the pallet value of the vector data and the bitmap pallet value, so that the storage capacity is small, and the output from the storage memory is performed only once. If the data amount is large and overflows the memory size of the data storage means, the compression ratio of only the bitmap image can be increased, so that the quality of the vector data is not degraded and the processing of the vector data is performed by further processing in band units. And the buffer memory size when receiving bitmap image data can be reduced, and when the toner save mode is set, the compression ratio of the bitmap section encoding means 8 can be set to a high value. The frequency of overflows is reduced (some It can provide print data processing apparatus not to lower the printing speed to Habukeru the trouble of re-compressed back to the bit map data to does not occur).

(Embodiment 5) Hereinafter, Embodiment 5 of the present invention will be described with reference to FIG.

FIG. 16 is a schematic configuration diagram of a print data processing apparatus according to the fifth embodiment of the present invention. In FIG. 16, vector data 1, bitmap data 2, pallet generation means 3, bitmap pallet generation means 4, vector part data generation means 5, vector part data storage means 6, bitmap part data generation means 7, bitmap part Encoding means 8, bitmap part data storage means 9, bitmap part data decompression means 10, bitmap part data superimposing means 11, data amount detecting means 13, compression rate changing means 14, band dividing means 15, toner save control The means 17 is exactly the same as in the fourth embodiment.

In the fifth embodiment, the bitmap section coding means 8 further includes a coding selection means 80, a bitmap section gradation weighting coding means 18, and a bitmap portion contour weighting coding means. 19. When the toner save is to be activated, the bitmap part outline emphasis coding means 19 is selected. When the toner save mode operates, since the gradation information becomes redundant, it can be encoded by adding the contour information accordingly. At the time of toner save printing, by reducing the density of data other than the outline information, there is an advantage that the object can be clarified.

As described above, in the fifth embodiment, the vector portion data is represented by the pallet value of the vector data and the bitmap pallet value, so that the storage capacity is small and the output from the storage memory is only one superposition. If the data amount is large and overflows the memory size of the data storage means, the compression ratio of only the bitmap image can be increased, so that the quality of the vector data is not degraded and the processing of the vector data is performed by further processing in band units. And a print data processing apparatus capable of reducing the buffer memory size when receiving bitmap image data and reducing the density of data other than contour information when activating toner saving.

Embodiment 6 Hereinafter, Embodiment 6 of the present invention will be described with reference to FIGS.

FIG. 17 is a schematic configuration diagram of a print data processing apparatus according to the sixth embodiment of the present invention. In FIG. 17, vector data 1, bitmap data 2, pallet generating means 3, bitmap pallet generating means 4, vector part data generating means 5, vector part data storing means 6, bitmap part data generating means 7, bitmap part The encoding means 8, the bit map part data storage means 9, the bit map part data decompression means 10, the bit map part data superimposing means 11, the data amount detecting means 13, the compression ratio changing means 14, and the band dividing means 15 This is exactly the same as in the second embodiment.

In the sixth embodiment, a bitmap section color conversion means 20 is added. FIG. 18 shows details of the bitmap section color conversion means 20. The color space of the bitmap data 1 that has passed through the bitmap portion data generation means is YUV or RGB of a luminance system,
It may be a concentration-based CMYK. A process of absorbing such a difference in the color space and unifying the color space to a YUV color space having high compression efficiency is performed (it goes without saying that the unification to the YIQ system is similar).

When the input color space is of the YUV type,
Of course, the data is passed through without any processing, and if the data is of RGB system, the linear color conversion means 21 converts the data to YUV system. For the CMYK system, first, the K (black) component is removed and converted into CMY data by the blackout means 22 based on the UCR rate, and then nonlinear conversion is performed by using the table interpolation calculation means 23 to convert the data to the YUV system. Perform the conversion.

As described above, in the sixth embodiment, the vector portion data is represented by the pallet value of the vector data and the bitmap pallet value, so that the storage capacity is small and the output from the storage memory is performed only once. In addition, if the data amount is large and the memory size of the data storage means overflows, the compression ratio of only the bitmap image can be increased, so that the quality of the vector data is not degraded, and the processing of the vector data is performed by performing the processing in band units. A print data processing device that can reduce the buffer memory size when receiving bitmap image data, and can further reduce the circuit scale because a single encoding method can be configured by unifying the color space for bitmap data. Can be provided.

(Embodiment 7) Embodiment 7 of the present invention will be described below with reference to FIGS.

Although FIG. 17 has been described in the sixth embodiment of the present invention, the seventh embodiment has exactly the same configuration.

FIG. 19 shows only the flow of processing for bitmap data in detail. 19, the first linear color conversion means 33 is equivalent to the linear color conversion means 21 described in the sixth embodiment and shown in FIG. The second color conversion means 27 and the blackout means 24 are the same as those shown in 22, 23, and 24 of FIG. 18 described in the sixth embodiment. On the other hand, the third color conversion means 2
8 and first and second table interpolation calculating means 30 and 31
Is added to the table 25 for storing the interpolation data.

The third color conversion means operates as follows. First, when the input data from the bitmap section data generation means 7 is a luminance system, a luminance → CMYK density conversion parameter corresponding to the characteristics of the color printer output device is read from (a) of the table memory 25 and operated.
Here, for convenience, a table memory 25 is set, but this may be set directly by a CPU (not shown) or the like, or set by an external interface (not shown). It does not matter. When the input from the bitmap part data generation means 7 is a CMYK density value, redaction based on UCR may be performed as described in the sixth embodiment. , The redaction parameter based on the temporary UCR rate is set from the UCR rate control means 26. Next, in the conversion from CMY to YUV, the CMY → YUV conversion table in the table memory 25 is set in the first table interpolation calculating means 30. When the data processed in this way is converted from YUV to CMYK, the second table interpolation calculation means 31 just adds the interpolation data set in the first table interpolation calculation means 30 to the data. A YUV → CMYK conversion table shown in (b) of the table memory 25 that corresponds to the inverse conversion is set,
Further, the provisional UCR rate previously set is set in the inking means 32 and operated.

As described above, in the seventh embodiment, the vector part data is represented by the pallet value of the vector data and the bitmap pallet value, so that the storage capacity is small and the output from the storage memory is only one superposition. If the data amount is large and overflows the memory size of the data storage means, the compression ratio of only the bitmap image can be increased, so that the quality of the vector data is not degraded, and the processing of the vector data is performed by performing the processing in band units. A print data processing device capable of reducing the buffer memory size when receiving bitmap image data and unifying the color space for the bitmap data so that a single encoding method can be used to reduce the circuit scale. Can be provided.

(Eighth Embodiment) Hereinafter, an eighth embodiment of the present invention will be described with reference to FIGS.

FIG. 17 has already been described in the sixth and seventh embodiments of the present invention, but the flow of data processing is the same as in the eighth embodiment.

FIG. 20 shows only the flow of processing for bitmap data in detail. The second color conversion means 34 shown in FIG.
The second color conversion means 27 and the third color conversion means 28 in FIG. 19 described in FIG. The data input from the bitmap part data generating means 7 is performed, and the data compressed by the data bitmap part encoding means 8 while performing the color conversion processing is stored in the bitmap part data storage means 9.
19, the second color conversion means 34 shown in FIG. 20 performs the same operation as the second color conversion means shown in FIG. The operation of the second color conversion means 34 after being expanded by the bitmap part data expansion means 10 has the same function as the third color conversion means 28 in FIG.

As described above, in the eighth embodiment, the vector portion data is represented by the pallet value of the vector data and the bit map pallet value, so that the storage capacity is small and the output from the storage memory is only one superposition. In addition, if the data amount is large and the memory size of the data storage means overflows, the compression ratio of only the bitmap image can be increased, so that the quality of the vector data is not degraded, and the processing of the vector data is performed by performing the processing in band units. The buffer memory size when receiving bitmap image data can be reduced, and the color space can be unified with the bitmap data, so that a single encoding method can be used to reduce the circuit scale. Small color conversion circuit scale for data Can provide that the print data processing apparatus.

[0059]

As described above, according to the present invention, the storage capacity of the vector portion data is small, the output from the storage memory can be performed by only one superimposition, and the print data processing which does not degrade the quality of the vector data. Equipment can be provided.

Further, by performing the processing in band units, it is possible to realize a print data processing apparatus having a small buffer memory size when receiving vector data and bitmap image data.

Further, when the compression ratio for the bitmap image data is increased, it is possible to realize a print data processing apparatus in which the image quality deterioration of the band joint portion due to the difference in the compression ratio for each band is inconspicuous.

Further, when the toner save mode is activated, the compression ratio for the bitmap image data can be increased from the beginning, so that the print data processing can avoid the recompression operation when the data does not enter the memory. The device can be realized.

When the toner save mode is activated, instead of reducing the gradation information for the same compression ratio, outline information is added to highlight the image by toner save. By not performing highlighting, it is possible to realize a print data processing apparatus capable of ensuring clear image quality of an object even during toner save.

Also, by converting the input bitmap image into one color space, print data which does not require a plurality of compression circuits and which can further reduce the data storage memory capacity due to the method of high compression ratio in color space. A processing device can be realized.

Further, by changing the interpolation parameters according to the color space of the input bitmap image, conversion into CMYK colors depending on the color printer can be realized, so that a print data processing apparatus with a simple circuit configuration can be realized.

Further, a circuit for performing color conversion processing before the bitmap section encoding means and a circuit for performing color conversion processing after the bitmap section decompression means can be shared, so that a print data processing apparatus having a simple circuit configuration can be realized.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a print data processing apparatus according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a pallet generation unit according to the first embodiment of the present invention.

FIG. 3 is a configuration diagram of a palette dictionary according to the first embodiment of the present invention.

FIG. 4 is a configuration diagram of a dictionary comparison unit according to the first embodiment of the present invention.

FIG. 5 is a diagram showing vector data according to the first embodiment of the present invention.

FIG. 6 is a diagram showing palette-converted vector data according to the first embodiment of the present invention;

FIG. 7 is a configuration diagram of a vector part data generation unit according to the first embodiment of the present invention.

FIG. 8 is a configuration diagram of a bitmap section data generation unit according to the first embodiment of the present invention.

FIG. 9 is a diagram showing attributes and processing contents of a superimposition process according to the first embodiment of the present invention.

FIG. 10 is a diagram showing attributes and processing contents of a superimposition process according to the first embodiment of the present invention.

FIG. 11 is a diagram showing attributes and processing contents of a superimposition process according to the first embodiment of the present invention.

FIG. 12 is a configuration diagram of a vector part data superimposing unit according to the first embodiment of the present invention;

FIG. 13 is a schematic configuration diagram of a print data processing device according to a second embodiment of the present invention.

FIG. 14 is a schematic configuration diagram of a print data processing apparatus according to a third embodiment of the present invention.

FIG. 15 is a schematic configuration diagram of a print data processing device according to a fourth embodiment of the present invention.

FIG. 16 is a schematic configuration diagram of a print data processing device according to a fifth embodiment of the present invention.

FIG. 17 is a schematic configuration diagram of a print data processing device according to a sixth embodiment of the present invention.

FIG. 18 is a configuration diagram of a bitmap portion color conversion unit according to the sixth embodiment of the present invention.

FIG. 19 is a schematic configuration diagram of a print data processing device according to a seventh embodiment of the present invention.

FIG. 20 is a schematic configuration diagram of a print data processing device according to an eighth embodiment of the present invention.

FIG. 21 is a schematic configuration diagram of a conventional print data processing apparatus.

FIG. 22 is a configuration diagram of a description language conversion unit in a conventional print data processing apparatus.

FIG. 23 is a configuration diagram of a vector conversion unit in a conventional print data processing apparatus.

FIG. 24 is a schematic configuration diagram of another conventional print data processing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vector data 2 Bitmap data 3 Palette generation means 4 Bitmap pallet generation means 5 Vector part data generation means 6 Vector part data storage means 7 Bitmap part data generation means 8 Bitmap part encoding means 9 Bitmap part data storage means DESCRIPTION OF SYMBOLS 10 Bit map part expansion means 11 Vector part data superposition means 12 Image data 13 Data amount detection means 14 Compression rate change means 15 Band division means 16 Encoding management means for each band 17 Toner save control means 18 Bit map part gradation emphasis code Conversion means 19 bitmap part contour emphasis coding means 20 bitmap part color conversion means 21 linear color conversion means 22, 29 blackout means 23, 36 table interpolation calculation means 24, 26 UCR rate control means 25 table memory 27 second Color conversion hand 28 third color conversion means 30 first table interpolation calculation means 31 second table interpolation calculation means 32 blackening means 33 first linear color conversion means 34 second color conversion means 35 blackout or blackening means 50 Palette dictionary 51 Dictionary comparison means 52 Vector data conversion means 60 Print data processing device 80 Encoding selection means

 ──────────────────────────────────────────────────の Continued on the front page F-term (reference) 2C087 BA02 BA03 BA07 BC01 BC05 BD07 BD24 BD37 BD40 5B057 CA01 CA08 CA12 CA16 CA17 CB01 CB08 CB12 CB17 CC02 CE08 CE18 CG01 CG06 CG10 CH11 DC39 5C076 AA12 AA26 AA33 AA36 BA06

Claims (8)

[Claims] 1. Palette generating means for generating, for image data input consisting of vector data and bitmap data having a plurality of overlay attributes, a palette dictionary consisting of palette values indicating combinations of primary colors from the input vector data. A bitmap palette generating means for registering one unique palette value for the bitmap data in the palette dictionary as a bitmap palette value; and a register for the vector data and the bitmap data. When performing drawing using a superimposition attribute, the vector data is drawn using the palette values in the palette dictionary generated by the palette generating unit, and the bitmap data is generated by the bitmap palette generating unit. The bitmap in the palette dictionary Vector part data generating means for performing drawing with a palette value and generating vector part data in accordance with a superimposition attribute of the two drawings, the vector part data generated by the vector part data generating means, the pallet generating means, and the bit Vector part data storage means for storing the palette dictionary generated by the map palette generation means, and bitmap part data generation means for generating bitmap part data by drawing only the bitmap data input using a superposition attribute A bitmap section data storage section for storing the bitmap section data generated by the bitmap section data generation section, and a vector for the bitmap section data stored in the bitmap section data storage section. Stored in the data storage unit When the vector portion data is superimposed, if the vector portion data is the bitmap pallet value representing the bitmap, no overwriting process is performed on the bitmap portion data, and the vector portion data is In the case other than the bitmap palette value representing the map, the vector part data superimposing means for performing bitmapping and overwriting the palette value of the vector part data on the bitmap part data using the palette dictionary, Vector part data storage means and data amount detection means for detecting the amount of data stored in the bitmap part data storage means,
A print data processing device having a compression ratio changing unit for changing a compression ratio in the bitmap encoding unit when the detected data amount becomes larger than a predetermined value. 2. A band division means for allocating input image data to an area divided into a plurality of raster bands in response to image data input consisting of vector data and bitmap data having a plurality of superimposition attributes. Pallet generation means for generating a band pallet dictionary composed of pallet values indicating combinations of primary colors from the input vector data band-divided by the band division means; and the pallet generation means further divided by the band division means. Bitmap pallet generation means for registering one unique pallet value for the bitmap data in the band palette dictionary as a bitmap pallet value; and the vector data band-divided by the band division means and the bitmap. Using data overlay attribute When performing drawing, the vector data is drawn using the pallet values in the band palette dictionary generated by the palette generating unit, and the bitmap data is stored in the band palette dictionary generated by the bitmap palette generating unit. A vector part data generating means for performing drawing using the bitmap palette value of the above and generating vector part data in accordance with a superposition attribute of the two drawing, and the vector part data and the palette generation generated by the vector part data generating means. Means, a vector part data storage means for storing the band palette dictionary generated by the bitmap palette generation means, and drawing only the bitmap data input band-divided by the band division means using a superposition attribute. Generate bitmap data Bitmap part data generating means, bitmap part data storage means for storing the bitmap part data generated by the bitmap part data generating means, and the bitmap for each band divided by the band dividing means. When superimposing the vector portion data stored in the vector portion data storage portion on the bitmap portion data stored in the portion data storage portion, the vector portion data represents a bitmap. If the bitmap pallet value, the overwriting process is not performed on the bitmap portion data.If the vector portion data is other than the bitmap pallet value representing the bitmap, the vector is displayed on the bitmap portion data. The palette value of the part data is displayed using the band palette dictionary. A vector part data superimposing means for performing bitmap mapping and overwriting; a data amount detecting means for detecting an amount of data stored in the vector part data storage means and the bitmap part data storage means; A print data processing apparatus comprising: a compression ratio changing unit that changes a compression ratio in the bitmap encoding unit when the compression ratio becomes larger than a predetermined value. 3. A band dividing means for assigning input image data to an area divided into a plurality of raster bands in response to image data input comprising vector data and bitmap data having a plurality of superimposition attributes. Pallet generating means for generating a band pallet dictionary composed of pallet values indicating combinations of primary colors from the input vector data band-divided by the band dividing means; and the pallet generating means further divided by the band dividing means. Bitmap palette generating means for registering one unique palette value for the bitmap data as the bitmap palette value in the band palette dictionary; and the vector data and the bitmap band-divided by the band dividing means. Using data overlay attribute When performing drawing, the vector data is drawn using the pallet values in the band palette dictionary generated by the palette generating unit, and the bitmap data is stored in the band palette dictionary generated by the bitmap palette generating unit. A vector part data generating means for performing drawing using the bitmap palette value of the above and generating vector part data in accordance with a superposition attribute of the two drawing, and the vector part data and the palette generation generated by the vector part data generating means. Means, a vector part data storage means for storing the band palette dictionary generated by the bitmap palette generation means, and drawing only the bitmap data input band-divided by the band division means using a superposition attribute. Generate bitmap data Bitmap part data generating means, bitmap part data storage means for storing the bitmap part data generated by the bitmap part data generating means, and the bitmap for each band divided by the band dividing means. When superimposing the vector portion data stored in the vector portion data storage portion on the bitmap portion data stored in the portion data storage portion, the vector portion data represents a bitmap. If the bitmap pallet value, the overwriting process is not performed on the bitmap portion data.If the vector portion data is other than the bitmap pallet value representing the bitmap, the vector is displayed on the bitmap portion data. The palette value of the part data is displayed using the band palette dictionary. A vector part data superimposing means for performing bitmap mapping and overwriting; a data amount detecting means for detecting an amount of data stored in the vector part data storage means and the bitmap part data storage means; A compression rate changing means for changing a compression rate in the bitmap encoding means when the compression rate becomes larger than a predetermined value; and a band for managing a compression rate of the bitmap section encoding means changed by the compression rate changing means. A print data processing device having encoding management means. 4. A band dividing means for allocating input image data to an area divided into a plurality of raster bands in response to image data input comprising vector data having a plurality of superimposition attributes and bitmap data. Pallet generating means for generating a band pallet dictionary composed of pallet values indicating combinations of primary colors from the input vector data band-divided by the band dividing means; and the pallet generating means further divided by the band dividing means. Bitmap palette generating means for registering one unique palette value for the bitmap data as the bitmap palette value in the band palette dictionary; and the vector data and the bitmap band-divided by the band dividing means. Using data overlay attribute When performing drawing, the vector data is drawn using the pallet values in the band palette dictionary generated by the palette generating unit, and the bitmap data is stored in the band palette dictionary generated by the bitmap palette generating unit. A vector part data generating means for performing drawing using the bitmap palette value of the above and generating vector part data in accordance with a superposition attribute of the two drawing, and the vector part data and the palette generation generated by the vector part data generating means. Means, a vector part data storage means for storing the band palette dictionary generated by the bitmap palette generation means, and drawing only the bitmap data input band-divided by the band division means using a superposition attribute. Generate bitmap data Bitmap part data generating means, bitmap part data storage means for storing the bitmap part data generated by the bitmap part data generating means, and the bitmap for each band divided by the band dividing means. When superimposing the vector portion data stored in the vector portion data storage portion on the bitmap portion data stored in the portion data storage portion, the vector portion data represents a bitmap. If the bitmap pallet value, the overwriting process is not performed on the bitmap portion data.If the vector portion data is other than the bitmap pallet value representing the bitmap, the vector is displayed on the bitmap portion data. The palette value of the part data is displayed using the band palette dictionary. A vector part data superimposing means for performing bitmap mapping and overwriting; a data amount detecting means for detecting an amount of data stored in the vector part data storage means and the bitmap part data storage means; A compression ratio changing unit that changes a compression ratio in the bitmap encoding unit when the compression ratio is larger than a predetermined value; a toner save control unit; and the compression ratio change unit when the toner save control unit performs toner save control. A print data processing apparatus, wherein a compression ratio of the bitmap encoding means is changed. 5. A band dividing means for allocating input image data to an area divided into a plurality of raster bands in response to image data input comprising vector data and bitmap data having a plurality of superimposition attributes. Pallet generation means for generating a band pallet dictionary composed of pallet values indicating combinations of primary colors from the input vector data band-divided by the band division means; and the pallet generation means further divided by the band division means. Bitmap pallet generation means for registering one unique pallet value for the bitmap data in the band palette dictionary as a bitmap pallet value; and the vector data band-divided by the band division means and the bitmap. Using data overlay attribute When performing drawing, the vector data is drawn using the pallet values in the band palette dictionary generated by the palette generating unit, and the bitmap data is stored in the band palette dictionary generated by the bitmap palette generating unit. A vector part data generating means for performing drawing using the bitmap palette value of the above and generating vector part data in accordance with a superposition attribute of the two drawing, and the vector part data and the palette generation generated by the vector part data generating means. Means, a vector part data storage means for storing the band palette dictionary generated by the bitmap palette generation means, and drawing only the bitmap data input band-divided by the band division means using a superposition attribute. Generate bitmap data Bitmap part data generating means, bitmap part data storage means for storing the bitmap part data generated by the bitmap part data generating means, and the bitmap for each band divided by the band dividing means. When superimposing the vector portion data stored in the vector portion data storage portion on the bitmap portion data stored in the portion data storage portion, the vector portion data represents a bitmap. If the bitmap pallet value, the overwriting process is not performed on the bitmap portion data.If the vector portion data is other than the bitmap pallet value representing the bitmap, the vector is displayed on the bitmap portion data. The palette value of the part data is displayed using the band palette dictionary. A vector part data superimposing means for performing bitmap mapping and overwriting; a data amount detecting means for detecting an amount of data stored in the vector part data storage means and the bitmap part data storage means; A compression ratio changing unit for changing a compression ratio in the bitmap encoding unit when the bitmap encoding unit becomes larger than a predetermined value; and a toner save control unit. When the toner save control unit performs the toner save control, the map unit includes a tone emphasis encoding unit for the map unit, a contour emphasis encoding unit for emphasizing the contour information, and an encoding selection unit for selecting the two. Wherein the encoding selecting means selects the bitmap portion contour-oriented encoding means. Management apparatus. 6. A band dividing means for allocating input image data to an area divided into a plurality of raster bands in response to image data input comprising vector data and bitmap data having a plurality of superimposition attributes. Pallet generating means for generating a band pallet dictionary composed of pallet values indicating combinations of primary colors from the input vector data band-divided by the band dividing means; and the pallet generating means further divided by the band dividing means. Bitmap pallet generation means for registering one unique pallet value for the bitmap data in the band palette dictionary as a bitmap pallet value; and the vector data band-divided by the band division means and the bitmap. Using data overlay attribute When performing drawing, the vector data is drawn using the pallet values in the band palette dictionary generated by the palette generating unit, and the bitmap data is stored in the band palette dictionary generated by the bitmap palette generating unit. A vector part data generating means for performing drawing using the bitmap palette value of the above and generating vector part data in accordance with a superposition attribute of the two drawing, and the vector part data and the palette generation generated by the vector part data generating means. Means, a vector part data storage means for storing the band palette dictionary generated by the bitmap palette generation means, and drawing only the bitmap data input band-divided by the band division means using a superposition attribute. Generate bitmap data Bitmap part data generating means, bitmap part data storage means for storing the bitmap part data generated by the bitmap part data generating means, and the bitmap for each band divided by the band dividing means. When superimposing the vector portion data stored in the vector portion data storage portion on the bitmap portion data stored in the portion data storage portion, the vector portion data represents a bitmap. If the bitmap pallet value, the overwriting process is not performed on the bitmap portion data.If the vector portion data is other than the bitmap pallet value representing the bitmap, the vector is displayed on the bitmap portion data. The palette value of the part data is displayed using the band palette dictionary. A vector part data superimposing means for performing bitmap mapping and overwriting; a data amount detecting means for detecting an amount of data stored in the vector part data storage means and the bitmap part data storage means; A compression ratio changing unit that changes a compression ratio in the bitmap encoding unit when the compression ratio becomes larger than a predetermined value;
Further, there is a bitmap section color conversion section at the preceding stage of the bitmap section encoding section, and even if the color space is luminance system data such as RGB or YUV for the bitmap data input, CMYK or the like is used. A print data processing apparatus for converting even density-based data into a YUV color space. 7. Band dividing means for allocating input image data to an area divided into a plurality of raster bands in response to image data input comprising vector data and bitmap data having a plurality of superimposition attributes. Pallet generation means for generating a band pallet dictionary composed of pallet values indicating combinations of primary colors from the input vector data band-divided by the band division means; and the pallet generation means further divided by the band division means. Bitmap pallet generation means for registering one unique pallet value for the bitmap data in the band palette dictionary as a bitmap pallet value; and the vector data band-divided by the band division means and the bitmap. Using data overlay attribute When performing drawing, the vector data is drawn using the pallet values in the band palette dictionary generated by the palette generating unit, and the bitmap data is stored in the band palette dictionary generated by the bitmap palette generating unit. A vector part data generating means for performing drawing using the bitmap palette value of the above and generating vector part data in accordance with a superposition attribute of the two drawing, and the vector part data and the palette generation generated by the vector part data generating means. Means, a vector part data storage means for storing the band palette dictionary generated by the bitmap palette generation means, and drawing only the bitmap data input band-divided by the band division means using a superposition attribute. Generate bitmap data Bitmap part data generating means, bitmap part data storage means for storing the bitmap part data generated by the bitmap part data generating means, and the bitmap for each band divided by the band dividing means. When superimposing the vector portion data stored in the vector portion data storage portion on the bitmap portion data stored in the portion data storage portion, the vector portion data represents a bitmap. If the bitmap pallet value, the overwriting process is not performed on the bitmap portion data.If the vector portion data is other than the bitmap pallet value representing the bitmap, the vector is displayed on the bitmap portion data. The palette value of the part data is displayed using the band palette dictionary. A vector part data superimposing means for performing bitmap mapping and overwriting; a data amount detecting means for detecting an amount of data stored in the vector part data storage means and the bitmap part data storage means; A compression ratio changing unit that changes a compression ratio in the bitmap encoding unit when the compression ratio becomes larger than a predetermined value;
Further, a bitmap section color conversion section having a first table interpolation section and a table data storage memory for storing table data of the first table interpolation section exist at a stage preceding the bitmap section encoding section. Regarding the input of map data, even if the color space is luminance data such as RGB or YUV or density data such as CMYK, the color space is converted into the YUV color space and then encoded by the bitmap encoding means. After the converted data is again decoded into the YUV color space by the bitmap section expansion means, the CMYK conversion means having the second table interpolation means converts the
When converting to MYK density data, if the bitmap data input is luminance, table data for converting luminance to CMYK density is given to the second table interpolation means from the table data storage memory, and the bitmap data is converted to MYK density data. Print data processing wherein when the input is density, table data is provided from the table data storage memory such that the first table interpolating means and the second table interpolating means have an inverse conversion relationship. apparatus. 8. Band dividing means for allocating input image data to an area divided into a plurality of raster bands in response to image data input comprising vector data and bitmap data having a plurality of superimposition attributes. Pallet generating means for generating a band pallet dictionary composed of pallet values indicating combinations of primary colors from the input vector data band-divided by the band dividing means; and the pallet generating means further divided by the band dividing means. Bitmap palette generating means for registering one unique palette value for the bitmap data as the bitmap palette value in the band palette dictionary; and the vector data and the bitmap band-divided by the band dividing means. Using data overlay attribute When performing drawing, the vector data is drawn using the pallet values in the band palette dictionary generated by the palette generating unit, and the bitmap data is stored in the band palette dictionary generated by the bitmap palette generating unit. A vector part data generating means for performing drawing using the bitmap palette value of the above and generating vector part data in accordance with a superposition attribute of the two drawing, and the vector part data and the palette generation generated by the vector part data generating means. Means, a vector part data storage means for storing the band palette dictionary generated by the bitmap palette generation means, and drawing only the bitmap data input band-divided by the band division means using a superposition attribute. Generate bitmap data Bitmap part data generating means, bitmap part data storage means for storing the bitmap part data generated by the bitmap part data generating means, and the bitmap for each band divided by the band dividing means. When superimposing the vector portion data stored in the vector portion data storage portion on the bitmap portion data stored in the portion data storage portion, the vector portion data represents a bitmap. If the bitmap pallet value, the overwriting process is not performed on the bitmap portion data.If the vector portion data is other than the bitmap pallet value representing the bitmap, the vector is displayed on the bitmap portion data. The palette value of the part data is displayed using the band palette dictionary. A vector part data superimposing means for performing bitmap mapping and overwriting; a data amount detecting means for detecting an amount of data stored in the vector part data storage means and the bitmap part data storage means; A compression ratio changing unit that changes a compression ratio in the bitmap encoding unit when the compression ratio becomes larger than a predetermined value;
Further, a bitmap section color conversion section having a first table interpolation section and a table data storage memory for storing table data of the first table interpolation section exist at a stage preceding the bitmap section encoding section. Regarding the input of map data, even if the color space is luminance data such as RGB or YUV or density data such as CMYK, the color space is converted into the YUV color space and then encoded by the bitmap encoding means. After the converted data is again decoded into the YUV color space by the bitmap section expansion means, the CMYK conversion means having the second table interpolation means converts the
If the bitmap data input is luminance when converting to MYK density data, table data for converting luminance to CMYK density is given to the second table interpolation means from the table data storage memory, and the bitmap data is converted to MYK density data. When the input is a density, table data is provided from the table data storage memory such that the first table interpolating means and the second table interpolating means have an inverse conversion relationship, and the first table interpolating means is provided. And a second table interpolating means comprising the same hardware as hardware.